Display device

Abstract

The present invention discloses a display device, which includes a backlight module. The backlight module is composed of an optical layer, a double prism layer, a lamp board, and a backplane stacked in sequence from top to bottom. A horizontal heat conduction area is arranged on the back of the backplane. The horizontal heat conduction area includes a number of sunken heat conduction concave surfaces, and adjacent heat conduction concave surfaces are connected by sunken communication concave surfaces; heat conduction through holes are arranged at positions between adjacent horizontal heat conduction areas, and annular concave surfaces are coated on the outer peripheries of the heat conduction through holes; a metal composite material formed by compounding aluminum particles and resin is filled in the heat conduction concave surfaces, the communication concave surfaces, and the annular concave surfaces; the metal composite material filled in the heat conduction concave surfaces all protrudes from the back of the backplane. The present invention has the following advantages and effects: The present invention innovatively designs the heat dissipation module as a detachable structure, so that when maintaining, the user does not need to completely disassemble the backlight module, but only needs to easily disassemble the heat dissipation module to replace the thermal grease.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to display devices. Background Art

[0002] In recent years, Mini LED backlight technology has received extensive attention due to its excellent performance in display effects. This technology assembles smaller LED light sources together to achieve display effects with high brightness, high contrast, and wide color gamut, and has become a popular choice for high-end display products such as televisions, computer monitors, and mobile devices. However, in actual applications, a large amount of heat is generated during the operation of the MiniLED backlight module. If the heat cannot be dissipated in a timely and effective manner, a series of serious problems will occur, including a decrease in the luminous efficiency of the LED, color distortion, and a shortened service life.

[0003] In the Mini LED backlight module, due to its structural compactness, the high-density arrangement of LEDs causes heat to accumulate, resulting in an increase in temperature. Prolonged high-temperature operation will not only cause light decay of the LED light source and reduce its performance, but may also cause aging of the internal materials of the backlight module, thereby leading to deterioration of optical and mechanical properties. Therefore, good heat dissipation design is particularly important. Common heat dissipation measures include the use of heat-conducting materials and the configuration of heat dissipation devices.

[0004] When the heat-conducting medium (such as silicone grease) of the heat dissipation module fails or ages due to high temperature economy, it is often necessary to disassemble the entire backlight module for replacement. This process is not only time-consuming and laborious, but may also increase the failure risk and maintenance cost of the device.

[0005] As an important heat-conducting medium, the quality of silicone grease directly affects the heat dissipation performance. High-efficiency heat-conducting silicone grease can effectively reduce the thermal resistance of the heat dissipation interface and improve the overall heat dissipation efficiency. However, over time, temperature changes, and normal use, the silicone grease will gradually lose its heat-conducting ability and form a heat barrier. In this case, timely replacement of the silicone grease can not only restore the heat dissipation performance, ensure the stability and luminous efficiency of the LED operation, but also extend the overall service life of the module.

[0006] Therefore, providing a simple silicone grease replacement solution can not only reduce the complexity of maintenance, but also improve the user's participation in device maintenance and enhance the user experience. In the display device proposed by the present invention, the heat dissipation module is innovatively designed as a detachable structure, so that the user does not need to completely disassemble the backlight module during maintenance, but only needs to easily disassemble the heat dissipation module to replace the silicone grease. This design significantly improves the convenience and efficiency of maintenance, and is of great significance for enhancing the market competitiveness of the Mini LED backlight module. Summary of the Invention

[0007] The object of the present invention is to provide a display device to solve the problems raised in the background art.

[0008] The above technical object of the present invention is achieved through the following technical solutions:

[0009] To achieve the above object, the present invention provides a Mini LED backlight module with a double prism layer, including a backlight module, which is composed of an optical layer, a double prism layer, a lamp board and a backplane stacked in sequence from top to bottom; a number of horizontal heat conduction areas are regularly arranged on the back of the backplane, and each of the horizontal heat conduction areas includes a number of sunken heat conduction concave surfaces, and adjacent heat conduction concave surfaces are connected by sunken communication concave surfaces; the backplane is made of aluminum;

[0010] A number of heat conduction through holes penetrating the front and back of the backplane are arranged between adjacent horizontal heat conduction areas, and an annular concave surface is coated on the outer periphery of each heat conduction through hole;

[0011] A metal composite material formed by the composite of aluminum particles and resin is filled in each of the heat conduction concave surfaces, communication concave surfaces and annular concave surfaces; the metal composite material filled in each heat conduction concave surface protrudes from the back of the backplane.

[0012] A further setting is that the center distance between two heat conduction concave surfaces located on the same vertical axis in two adjacent horizontal heat conduction areas is 30 mm; the center distance between two adjacent heat conduction concave surfaces in the same horizontal heat conduction area is 27 mm.

[0013] To achieve the above object, the present invention also provides a display device, including a receiving carrier, and the backlight module is fixed inside the receiving carrier by screws;

[0014] A hollow heat dissipation chamber is provided inside the receiving carrier, and the heat dissipation chamber is located on the back of the backlight module. A heat dissipation module is detachably inserted into the heat dissipation chamber, and the heat dissipation module includes a heat dissipation seat, and a number of silicone grease application areas are arranged on the heat dissipation seat.

[0015] A further setting is that a number of sunken horizontal heat dissipation areas are provided on the front of the heat dissipation seat, and adjacent horizontal heat dissipation areas are connected by sunken auxiliary concave surfaces; a number of further sunken silicone grease application areas are arranged in each horizontal heat dissipation area, and silicone grease is applied in each silicone grease application area; a heat conduction copper sheet is clamped on the front of the heat dissipation seat, and the heat conduction copper sheet is in a continuously bent shape. After the heat conduction copper sheet is clamped on the front of the heat dissipation seat, it will be hidden in each horizontal heat dissipation area and each auxiliary concave surface, and cover each silicone grease application area;

[0016] After the heat dissipation base is inserted into the heat dissipation chamber, the heat conductive copper sheet will contact each metal composite material filled in the heat conductive concave surface.

[0017] A further setting is that the number of the horizontal heat dissipation areas is the same as that of the horizontal heat conduction areas, and the number of the silicone grease coating areas is the same as that of the heat conductive concave surfaces; after the heat dissipation base is inserted into the heat dissipation chamber, each of the horizontal heat dissipation areas will correspond to the position of each horizontal heat conduction area, and each of the silicone grease coating areas will correspond to the position of each heat conductive concave surface.

[0018] A further setting is that the bottom of the accommodating carrier is provided with a bilateral locking structure for locking the heat dissipation base inserted into the heat dissipation chamber, and the bilateral locking structure is composed of two unilateral locking structures symmetrically arranged along the central axis of the heat dissipation chamber;

[0019] The bottom of the heat dissipation base is fixedly provided with an extension base, the bottom of the accommodating carrier is provided with a bottom slot for the extension base to abut against, and two locking inner holes are opened in the extension base. After the extension base abuts against the bottom slot, the two unilateral locking structures will respectively extend into the two locking inner holes and lock the extension base together, so that the heat dissipation base is stably fixed in the accommodating carrier; after the heat dissipation base is fixed in the accommodating carrier, the heat conductive copper sheet will contact each metal composite material filled in the heat conductive concave surface.

[0020] A further setting is that the unilateral locking structure includes a unilateral inner shell fixed to the accommodating carrier. There is a horizontal unilateral inner hole in the unilateral inner shell. A locking action block is movably arranged in the unilateral inner hole. A locking inner concave surface is opened on the outer side of the locking inner hole. The locking action block can enter the locking inner concave surface to achieve the purpose of locking the extension base. A first built-in spring for applying an outward moving force to the locking action block so that it can enter the locking inner concave surface is arranged in the unilateral inner hole; the upper end of the outer side of the locking action block has a curved surface, and the curved surface can contact the extension base inserted into the bottom slot and automatically avoid being stressed.

[0021] A further setting is that a retracting action block is also movably arranged in the unilateral inner hole. The locking action block is located outside the retracting action block. The locking action block and the retracting action block form an integral body that moves together through a first cooperation block. The upper end of the first cooperation block, the lower end of the locking action block and the lower end of the retracting action block are respectively attached to the upper and lower walls of the unilateral inner hole to keep the locking action block and the retracting action block moving horizontally; a first blocking block is fixedly arranged at the upper end of the inner side of the unilateral inner hole. The first blocking block is located inside the first cooperation block. The first built-in spring is located between the first blocking block and the first cooperation block; the distance between the first blocking block and the lower wall of the unilateral inner hole is greater than or equal to the longitudinal cross-sectional width of the retracting action block;

[0022] The lower end of the described fallback action block has an inclined sub-fallback surface;

[0023] There is a fallback control cavity in the described single-sided inner shell. The fallback control cavity is located below the single-sided inner hole. A fallback action shaft is movably arranged longitudinally in the fallback control cavity. The upper end of the fallback action shaft has a mother fallback surface with the same slope as the sub-fallback surface. By only controlling the upward movement of the fallback action shaft, as the mother fallback surface contacts the sub-fallback surface, the fallback action block can be driven to move inwards;

[0024] An inner communication hole is provided in the described single-sided inner shell to connect the single-sided inner hole and the fallback control cavity for the longitudinal movement of the fallback action shaft.

[0025] A further setting is that a second cooperation block is fixedly arranged inside the fallback action shaft; a second blocking block is fixedly arranged at the lower end of the fallback control cavity, and the second cooperation block can contact the second blocking block to avoid detachment; a second built-in spring for applying a downward movement force to the fallback action shaft is arranged between the upper wall of the fallback control cavity and the second cooperation block, and the fallback action shaft maintains a state that does not hinder the outward movement of the locking action block;

[0026] A wide pressing block with a width larger than its own transverse cross-sectional width is fixedly arranged at the lower end of the fallback action shaft. The wide pressing block can move longitudinally in the fallback control cavity; the upward movement of the fallback action shaft is controlled by pressing the wide pressing block.

[0027] A further setting is that an inner partition area is formed between the two described single-sided inner shells. The extension base has a central block extending into the inner partition area, and a third built-in spring is compressed between the central block and the bottom of the accommodation carrier; after the two locking action blocks respectively enter the two locking concave surfaces to lock the extension base, the third built-in spring is in a compressed state; the central block can also abut against the fallback action block to prevent the first built-in spring and the second built-in spring from being over-pressed and unable to return to their original states.

[0028] The present invention has the following beneficial effects:

[0029] 1. In the present invention, the backplane is made of aluminum, which has good thermal conductivity and a relatively light mass. By filling a metal composite material in the heat-conducting concave surface on the back of the backplane, this metal composite material is formed by compounding aluminum particles and resin, and has the following advantages: ① It can effectively protect the aluminum particles and improve the corrosion resistance of the composite material, which makes this composite material perform better in humid or corrosive environments, thereby extending the service life; ② It reduces costs, and the composite material can reduce raw material and processing costs through processes such as molding. The setting of the heat-dissipating perforations can better achieve the heat-conducting balance between the front and back sides of the backplane; the connected concave surface can achieve the heat-conducting balance between adjacent heat-conducting concave surfaces. The metal composite material filled in the heat-conducting concave surface protrudes from the back of the backplane. The purpose of this setting is to reduce the frictional force generated during the insertion process with the heat sink while ensuring contact with the heat sink.

[0030] 2. In the present invention, the center distance between two adjacent heat-conducting concave surfaces in the same horizontal heat-conducting area is 27 millimeters, which helps to achieve an ideal heat-conducting path between the heat-conducting concave surfaces, avoid the occurrence of hot spots, ensure more uniform heat distribution on the backplane, and help extend the service life of the device; the center distance between two heat-conducting concave surfaces located on the same vertical axis in two adjacent horizontal heat-conducting areas is 30 millimeters, which can reduce the thermal stress generated by the material due to temperature changes, reduce the aging and fatigue caused by thermal cycling of the material, and improve the reliability of the material.

[0031] 3. In the present invention, a carrier is provided for the backlight module to be installed and fixed, and a heat-dissipating chamber is provided for the heat-dissipating module to be inserted. The heat-dissipating module is detachably arranged, which can be easily removed, and then the thermal grease in the thermal grease application area on it can be replaced. This avoids the drawback that the thermal grease is directly applied to the backplane, resulting in difficulty in replacement as an integrated unit; when the thermal grease needs to be replaced, only the heat-dissipating module needs to be removed and the thermal grease is reapplied, which is very convenient.

[0032] 4. In the present invention, the setting of the horizontal heat-dissipating area and the auxiliary concave surface can provide a hidden assembly for the heat-conducting copper sheet; the sunken thermal grease application area is for thermal grease. The heat-conducting copper sheet can contact the thermal grease for heat conduction and can also protect the thermal grease from being scraped disorderly.

[0033] 5. In the present invention, each horizontal heat-dissipating area corresponds to the position of each horizontal heat-conducting area, which can better contact and conduct heat; each thermal grease application area corresponds to the position of each heat-conducting concave surface, which can better dissipate heat from hot spots.

[0034] 6. In the present invention, the bilateral locking structure is composed of unilateral locking structures. Two unilateral locking structures can achieve bilateral locking, improving the stability after locking; the heat-conducting copper sheet can contact each metal composite material filled in the heat-conducting concave surface, and heat transfer is achieved based on contact heat conduction.

[0035] 7. In the present invention, the locking action block in the unilateral inner shell can move outward and enter the locking concave surface to lock the extended base. The first built-in spring applies an outward force to the locking action block. The setting of the curved surface can contact the extended base inserted into the bottom slot and be forced to automatically avoid it.

[0036] 8. In the present invention, the retracting action block and the locking action block form an integral whole that moves together through the first cooperation block. The locking action block can move laterally in the unilateral inner hole. The first blocking block provides bearing capacity for the inner side of the first built-in spring, and the space between the first blocking block and the first cooperation block is for placing the first built-in spring. The distance between the first blocking block and the lower wall of the unilateral inner hole is greater than or equal to the longitudinal cross-sectional width of the retracting action block to avoid hindering the inward movement of the retracting action block. Just control the upward movement of the retracting action shaft. As the female retracting surface contacts the male retracting surface, the retracting action block can be driven to move inward, and the inner communication hole allows the retracting action shaft to move longitudinally.

[0037] 9. In the present invention, the second cooperation block on the inner side of the retracting action shaft can contact the second blocking block to avoid detachment. The second built-in spring can apply a downward force to the retracting action shaft to keep the retracting action shaft in a state that does not hinder the outward movement of the locking action block. The setting of the wide pressing block can expand the contact width of the operator and facilitate the operator to apply force to press the wide pressing block.

[0038] 10. In the present invention, the extended base has a central block that extends into the inner partition area. The central block contacts the third built-in spring. After the two locking action blocks enter the two locking concave surfaces respectively to lock the extended base, the third built-in spring is in a compressed state. After the two locking action blocks are separated from the two locking concave surfaces respectively, the central block can be quickly pushed upward by the third built-in spring and then separated from the heat dissipation chamber. The central block can also abut against the retracting action block to prevent the first built-in spring and the second built-in spring from being over-pressed and unable to return to their original state. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of the back panel in the embodiment;

[0040] Figure 2 It is a schematic assembly structure diagram of the accommodation carrier and the heat dissipation module in the embodiment;

[0041] Figure 3 It is a schematic structural diagram of the heat-conducting copper sheet in the embodiment;

[0042] Figure 4 For Figure 2 The enlarged view of part A in

[0043] In the figure: 11, backplane; 12, heat-conducting concave surface; 13, connecting concave surface; 14, heat-conducting perforation; 141, annular concave surface; 21, accommodating carrier; 22, heat dissipation chamber; 31, heat dissipation seat; 311, clamping groove; 32, horizontal heat dissipation area; 33, auxiliary concave surface; 34, silicone grease application area; 41, heat-conducting copper sheet; 411, clamping protrusion; 51, extending base; 52, bottom slot; 53, locking inner hole; 531, locking inner concave surface; 61, single-sided inner shell; 62, single-sided inner hole; 63, locking moving block; 631, curved surface; 64, first built-in spring; 65, retracting moving block; 651, sub-retracting surface; 66, first cooperation block; 67, first blocking block; 71, retracting control cavity; 72, retracting moving shaft; 721, mother retracting surface; 73, inner connecting hole; 74, second cooperation block; 75, second blocking block; 76, second built-in spring; 77, wide pressing block; 81, inner partition area; 82, central block; 83, third built-in spring. Detailed implementation manners

[0044] The present invention will be further described in detail below with reference to the accompanying drawings.

[0045] As shown in the Figures 1 to 4 accompanying drawings;

[0046] This embodiment discloses a Mini LED backlight module with a double prism layer arrangement, including a backlight module, which is composed of an optical layer, a double prism layer, a lamp board, and a backplane 11 stacked in sequence from top to bottom; the optical layer, the double prism layer, and the lamp board are all conventional structures and belong to the prior art field.

[0047] On the back of the backplane 11, a number of horizontal heat-conducting areas are regularly arranged, and the number of horizontal heat-conducting areas is 5; each horizontal heat-conducting area includes a number of sunken heat-conducting concave surfaces 12, and adjacent heat-conducting concave surfaces 12 are connected by sunken connecting concave surfaces 13; the backplane 11 is made of aluminum;

[0048] Between adjacent horizontal heat-conducting areas, a number of heat-conducting perforations 14 penetrating the front and back of the backplane 11 are arranged, and the number of heat-conducting perforations 14 is 34; an annular concave surface 141 is coated on the outer periphery of each heat-conducting perforation 14;

[0049] In each of the heat-conducting concave surface 12, the connecting concave surface 13, and the annular concave surface 141, a metal composite material formed by compounding aluminum particles and resin is filled; the metal composite material filled in each heat-conducting concave surface 12 will protrude from the back of the backplane 11.

[0050] Among them, the center distance between two heat-conducting concave surfaces 12 located on the same vertical axis in two adjacent horizontal heat-conducting areas is 30 mm; the center distance between two adjacent heat-conducting concave surfaces 12 in the same horizontal heat-conducting area is 27 mm.

[0051] This embodiment also discloses a display device, which includes a receiving carrier 21, and the backlight module is fixed inside the receiving carrier 21 by screws;

[0052] A hollow heat dissipation chamber 22 is formed inside the receiving carrier 21. The heat dissipation chamber 22 is located on the back of the backlight module. A heat dissipation module is detachably inserted into the heat dissipation chamber 22. The heat dissipation module includes a heat dissipation base 31. A number of silicone grease application areas 34 are arranged on the heat dissipation base 31. The number of silicone grease application areas 34 is the same as that of the heat conduction concave surfaces 12, both being 50.

[0053] Among them, a number of sunken horizontal heat dissipation areas 32 are formed on the front surface of the heat dissipation base 31, and adjacent horizontal heat dissipation areas 32 are connected by sunken auxiliary concave surfaces 33; A number of the further sunken silicone grease application areas 34 are arranged in each horizontal heat dissipation area 32, and silicone grease is applied in each silicone grease application area 34; A heat conduction copper sheet 41 is clamped on the front surface of the heat dissipation base 31. The heat conduction copper sheet 41 is in a continuously bent shape. After being clamped on the front surface of the heat dissipation base 31, the heat conduction copper sheet 41 will be hidden in each horizontal heat dissipation area 32 and each auxiliary concave surface 33, and cover each silicone grease application area 34;

[0054] It should be added that four clamping protrusions 411 are arranged on the heat conduction copper sheet 41, and clamping grooves 311 corresponding to the four clamping protrusions 411 are arranged in the heat dissipation base 31. Each clamping protrusion 411 and the corresponding clamping groove 311 are in a damping fit to limit the heat conduction copper sheet 41.

[0055] After the heat dissipation base 31 is inserted into the heat dissipation chamber 22, the heat conduction copper sheet 41 will contact each metal composite material filled in the heat conduction concave surface 12.

[0056] Among them, the number of horizontal heat dissipation areas 32 is the same as that of the horizontal heat conduction areas, and the number of silicone grease application areas 34 is the same as that of the heat conduction concave surfaces 12; After the heat dissipation base 31 is inserted into the heat dissipation chamber 22, each horizontal heat dissipation area 32 will correspond to the position of each horizontal heat conduction area, and each silicone grease application area 34 will correspond to the position of each heat conduction concave surface 12.

[0057] Among them, a bilateral locking structure for locking the heat dissipation base 31 inserted into the heat dissipation chamber 22 is arranged at the bottom of the receiving carrier 21. The bilateral locking structure is composed of two unilateral locking structures symmetrically arranged along the central axis of the heat dissipation chamber 22;

[0058] A bottom of the heat dissipation base 31 is fixedly provided with an extended base 51. A bottom slot 52 for the extended base 51 to abut against is formed at a bottom of the accommodation carrier 21. Two locking inner holes 53 are formed in the extended base 51. After the extended base 51 abuts against the bottom slot 52, two unilateral locking structures will respectively extend into the two locking inner holes 53 and lock the extended base 51 together, so that the heat dissipation base 31 is stably fixed in the accommodation carrier 21. After the heat dissipation base 31 is fixed in the accommodation carrier 21, the heat-conducting copper sheet 41 will contact each metal composite material filled in the heat-conducting concave surface 12.

[0059] Among them, the unilateral locking structure includes a unilateral inner shell 61 fixed to the accommodation carrier 21. A horizontal unilateral inner hole 62 is formed in the unilateral inner shell 61. A locking action block 63 is movably arranged in the unilateral inner hole 62. A locking inner concave surface 531 is formed on an outer side of the locking inner hole 53. The locking action block 63 can enter the locking inner concave surface 531 to lock the extended base 51. A first built-in spring 64 for applying an outward movement force to the locking action block 63 so that it can enter the locking inner concave surface 531 is arranged in the unilateral inner hole 62. An upper end of an outer side of the locking action block 63 has a curved surface 631. The curved surface 631 can contact the extended base 51 abutting against the bottom slot 52 and automatically avoid being stressed.

[0060] Among them, a retraction action block 65 is also movably arranged in the unilateral inner hole 62. The locking action block 63 is located on an outer side of the retraction action block 65. The locking action block 63 and the retraction action block 65 form an integral body that moves together through a first cooperation block 66. Upper ends of the first cooperation block 66, the locking action block 63 and lower ends of the retraction action block 65 are respectively attached to upper and lower walls of the unilateral inner hole 62, so that the locking action block 63 and the retraction action block 65 maintain a horizontal movement. A first blocking block 67 is fixedly arranged at an upper end inside the unilateral inner hole 62. The first blocking block 67 is located inside the first cooperation block 66. The first built-in spring 64 is located between the first blocking block 67 and the first cooperation block 66. A distance between the first blocking block 67 and a lower wall of the unilateral inner hole 62 is greater than or equal to a longitudinal cross-sectional width of the retraction action block 65.

[0061] The lower end of the retraction action block 65 has an oblique sub-retraction surface 651.

[0062] A retraction control cavity 71 is formed in the unilateral inner shell 61. The retraction control cavity 71 is located below the unilateral inner hole 62. A retraction action shaft 72 is movably arranged in the retraction control cavity 71. The retraction action shaft 72 makes a longitudinal reciprocating movement in the retraction control cavity 71. An upper end of the retraction action shaft 72 has a mother retraction surface 721 with the same slope as the sub-retraction surface 651. By only controlling the retraction action shaft 72 to move upward, as the mother retraction surface 721 contacts the sub-retraction surface 651, the retraction action block 65 can be driven to move inward.

[0063] A through hole 73 that connects the unilateral inner hole 62 and the retraction control cavity 71 is provided in the unilateral inner shell 61 for the longitudinal movement of the retraction action shaft 72.

[0064] Wherein, a second cooperation block 74 is fixedly arranged inside the retraction action shaft 72; a second blocking block 75 is fixedly arranged at the lower end of the retraction control cavity 71, and the second cooperation block 74 can contact the second blocking block 75 to prevent separation; a second built-in spring 76 that applies a downward movement force to the retraction action shaft 72 is arranged between the upper wall of the retraction control cavity 71 and the second cooperation block 74, and the retraction action shaft 72 maintains a state that does not hinder the outward movement of the locking action block 63;

[0065] A wide pressing block 77 with a width larger than its own transverse cross-sectional width is fixedly arranged at the lower end of the retraction action shaft 72, and the wide pressing block 77 can perform longitudinal reciprocating movement in the retraction control cavity 71; the retraction action shaft 72 is controlled to move upward by pressing the wide pressing block 77.

[0066] Wherein, an inner partition area 81 is formed between the two unilateral inner shells 61, the extending base 51 has a central block 82 extending into the inner partition area 81, and a third built-in spring 83 is compressed between the central block 82 and the bottom of the accommodating carrier 21; after the two locking action blocks 63 respectively enter the two locking concave surfaces 531 to lock the extending base 51, the third built-in spring 83 is in a compressed state; the central block 82 can also abut against the retraction action block 65 to prevent the first built-in spring 64 and the second built-in spring 76 from being over-pressed and unable to return to their original state.

[0067] When installing the heat dissipation module:

[0068] 1. Apply thermal grease to each thermal grease application area 34, and then snap the heat-conducting copper sheet 41 onto the front of the heat dissipation base 31. The heat-conducting copper sheet 41 will be hidden in each horizontal heat dissipation area 32 and each auxiliary concave surface 33, and cover each thermal grease application area 34; the heat-conducting copper sheet 41 is flush with the front of the heat dissipation base 31 and is on the same plane.

[0069] 2. Insert the heat dissipation base 31 downward into the heat dissipation cavity 22, and the extending base 51 will move downward until it abuts against the bottom slot 52. At this time, the heat-conducting copper sheet 41 will contact each metal composite material filled in the heat-conducting concave surface 12. At the same time, each horizontal heat dissipation area 32 will correspond to the position of each horizontal heat-conducting area, and each thermal grease application area 34 will correspond to the position of each heat-conducting concave surface 12, achieving hot spot alignment and balanced heat dissipation.

[0070] 3. The setting of the bending surface 631 can contact and be stressed by the extending base 51 inserted into the bottom slot 52 and automatically avoid, so that the extending base 51 can smoothly enter the bottom slot 52.

[0071] 4. After the extension base 51 moves downward to abut against the bottom slot 52, the locking action blocks 63 in the two unilateral locking structures will enter the locking concave surface 531 under the outward movement force applied by the first built-in spring 64 to achieve the purpose of locking the extension base 51.

[0072] When removing the heat dissipation module:

[0073] 1. The operator presses two fingers of the hand together on the wide pressing blocks 77 in the two unilateral inner shells 61 and then presses upward. The two retracting action shafts 72 will move upward. As the female retracting surface 721 contacts the male retracting surface 651, it will drive the two retracting action blocks 65 to move inward, and the two locking action blocks 63 will follow and move inward, and then respectively disengage from the corresponding locking concave surfaces 531.

[0074] 2. After the two locking action blocks 63 respectively disengage from the two locking concave surfaces 531, the central block 82 can be quickly pushed upward under the push of the third built-in spring 83, and then partially disengages from the heat dissipation chamber 22, facilitating the operator to pull out the heat dissipation seat 31.

[0075] This specific embodiment is only an interpretation of the present invention and is not a limitation thereof. Those skilled in the art can make modifications without creative contributions to this embodiment according to needs after reading this specification, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A display device, comprising a backlight module and a receiving carrier (21), wherein the backlight module is composed of an optical layer, a double prism layer, a lamp board, and a back plate (11) stacked in sequence from top to bottom; characterized in that: On the back surface of the backplane (11), a number of horizontal heat conduction areas are regularly arranged. Each of the horizontal heat conduction areas includes a number of sunken heat conduction concave surfaces (12), and adjacent heat conduction concave surfaces (12) are connected by sunken connecting concave surfaces (13); the backplane (11) is made of aluminum; A number of heat conduction through holes (14) penetrating the front and back surfaces of the backplane (11) are arranged at the positions between adjacent horizontal heat conduction areas. An annular concave surface (141) is coated on the outer periphery of each heat conduction through hole (14); A metal composite material formed by compounding aluminum particles and resin is filled in each of the heat conduction concave surfaces (12), connecting concave surfaces (13) and annular concave surfaces (141); the metal composite material filled in each heat conduction concave surface (12) protrudes from the back surface of the backplane (11); The backlight module is fixed inside the accommodation carrier (21) by screws; A hollow heat dissipation chamber (22) is provided inside the accommodation carrier (21). The heat dissipation chamber (22) is located on the back of the backlight module. A heat dissipation module is detachably inserted into the heat dissipation chamber (22). The heat dissipation module includes a heat dissipation base (31), and a number of silicone grease application areas (34) are arranged on the heat dissipation base (31); A number of sunken horizontal heat dissipation areas (32) are provided on the front surface of the heat dissipation base (31). Adjacent horizontal heat dissipation areas (32) are connected by sunken auxiliary concave surfaces (33); a number of further sunken silicone grease application areas (34) are arranged in each horizontal heat dissipation area (32), and silicone grease is applied in each silicone grease application area (34); a heat conduction copper sheet (41) is clamped on the front surface of the heat dissipation base (31). The heat conduction copper sheet (41) is in a continuously bent shape. After the heat conduction copper sheet (41) is clamped on the front surface of the heat dissipation base (31), it will be hidden in each horizontal heat dissipation area (32) and each auxiliary concave surface (33), and cover each silicone grease application area (34); After the heat dissipation base (31) is inserted into the heat dissipation chamber (22), the heat conduction copper sheet (41) will contact each metal composite material filled in the heat conduction concave surface (r12).

2. The display device according to claim 1, wherein: The center distance between two heat conduction concave surfaces (12) located on the same vertical axis in two adjacent horizontal heat conduction areas is 30 mm; the center distance between two adjacent heat conduction concave surfaces (12) in the same horizontal heat conduction area is 27 mm.

3. The display device according to claim 1, wherein: The number of the horizontal heat dissipation areas (32) is the same as that of the horizontal heat conduction areas, and the number of the silicone grease application areas (34) is the same as that of the heat conduction concave surfaces (12); after the heat dissipation base (31) is inserted into the heat dissipation chamber (22), each horizontal heat dissipation area (32) will correspond to the position of each horizontal heat conduction area, and each silicone grease application area (34) will correspond to the position of each heat conduction concave surface (12).

4. The display device according to claim 3, wherein: The bottom of the accommodating carrier (21) is provided with a bilateral locking structure for locking the heat dissipation seat (31) inserted into the heat dissipation chamber (22). The bilateral locking structure is composed of two unilateral locking structures symmetrically arranged along the central axis of the heat dissipation chamber (22). An extension base (51) is fixedly arranged at the bottom of the heat dissipation seat (31). A bottom slot (52) for the extension base (51) to abut against is formed at the bottom of the accommodating carrier (21). Two locking inner holes (53) are formed in the extension base (51). After the extension base (51) abuts against the bottom slot (52), the two unilateral locking structures will respectively extend into the two locking inner holes (53) and lock the extension base (51) together, so that the heat dissipation seat (31) is stably fixed in the accommodating carrier (21). After the heat dissipation seat (31) is fixed in the accommodating carrier (21), the heat-conducting copper sheet (41) will contact each metal composite material filled in the heat-conducting concave surface (12).

5. The display device according to claim 4, wherein: The unilateral locking structure includes a unilateral inner shell (61) fixed to the accommodating carrier (21). A transverse unilateral inner hole (62) is formed in the unilateral inner shell (61). A locking action block (63) is movably arranged in the unilateral inner hole (62). A locking inner concave surface (531) is formed on the outer side of the locking inner hole (53). The locking action block (63) can enter the locking inner concave surface (531) to lock the extension base (51). A first built-in spring (64) for applying an outward movement force to the locking action block (63) so that it can enter the locking inner concave surface (531) is arranged in the unilateral inner hole (62). The upper end of the outer side of the locking action block (63) has a curved surface (631), and the curved surface (631) can contact and be forced by the extension base (51) inserted into the bottom slot (52) and automatically avoid.

6. The display device according to claim 5, wherein: A retracting action block (65) is also movably arranged in the unilateral inner hole (62). The locking action block (63) is located on the outer side of the retracting action block (65). The locking action block (63) and the retracting action block (65) form an integral body that moves together through a first cooperation block (66). The upper end of the first cooperation block (66), the upper end of the locking action block (63), and the lower end of the retracting action block (65) are respectively attached to the upper and lower walls of the unilateral inner hole (62) to keep the locking action block (63) and the retracting action block (65) moving horizontally. A first blocking block (67) is fixedly arranged at the upper end inside the unilateral inner hole (62). The first blocking block (67) is located inside the first cooperation block (66). The first built-in spring (64) is located between the first blocking block (67) and the first cooperation block (66). The distance between the first blocking block (67) and the lower wall of the unilateral inner hole (62) is greater than or equal to the longitudinal cross-sectional width of the retracting action block (65). The lower end of the retracting action block (65) has an oblique sub-retracting surface (651). The unilateral inner shell (61) has a retraction control cavity (71) located below the unilateral inner hole (62). A retraction action shaft (72) is movably arranged longitudinally within the retraction control cavity (71). The upper end of the retraction action shaft (72) has a mother retraction surface (721) with the same slope as the sub-retraction surface (651). By simply controlling the upward movement of the retraction action shaft (72), as the mother retraction surface (721) contacts the sub-retraction surface (651), the retraction action block (65) can be driven to move inwards. An inner communication hole (73) is provided in the unilateral inner shell (61) to connect the unilateral inner hole (62) and the retraction control cavity (71) for the longitudinal movement of the retraction action shaft (72).

7. The display device according to claim 6, wherein: A second cooperation block (74) is fixedly arranged inside the retraction action shaft (72). A second stop block (75) is fixedly arranged at the lower end of the retraction control cavity (71). The second cooperation block (74) can contact the second stop block (75) to prevent detachment. A second built-in spring (76) for applying a downward force to the retraction action shaft (72) is arranged between the upper wall of the retraction control cavity (71) and the second cooperation block (74). The retraction action shaft (72) maintains a state that does not hinder the outward movement of the locking action block (63). A wide pressing block (77) with a width larger than its own transverse cross-sectional width is fixedly arranged at the lower end of the retraction action shaft (72). The wide pressing block (77) can move longitudinally back and forth within the retraction control cavity (71). The upward movement of the retraction action shaft (72) is controlled by pressing the wide pressing block (77).

8. The display device according to claim 7, wherein: An inner partition area (81) is formed between the two unilateral inner shells (61). The extension base (51) has a central block (82) extending into the inner partition area (81). A third built-in spring (83) is compressed between the central block (82) and the bottom of the accommodation carrier (21). After the two locking action blocks (63) respectively enter the two locking concave surfaces (531) to lock the extension base (51), the third built-in spring (83) is in a compressed state. The central block (82) can also abut against the retraction action block (65) to prevent the first built-in spring (64) and the second built-in spring (76) from being over-pressed and unable to return to their original states.

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